Efficient Networks S120 manual Direct setpoint input MDI, Features

Models: S120

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Function modules 7.9 Basic positioner

7.9.6Direct setpoint input (MDI)

Features

Select direct setpoint input (p2647)

Select positioning type (p2648)

Direction selection (p2651, p2652)

Setting-up (p2653)

Fixed setpoints

CO: Position setpoint (p2690)

CO: Velocity setpoint (p2691)

CO: Acceleration override (p2692)

CO: Deceleration override (p2693)

Connector inputs

CI: MDI position setpoint (p2642)

CI: MDI velocity setpoint (p2643)

CI: MDI acceleration override (p2644)

CI: MDI deceleration override (p2645)

CI: Velocity override (p2646)

Accept (p2649, p2650)

Description

The direct setpoint input function allows for positioning (absolute, relative) and setup (endless position-controlled) by means of direct setpoint input (e.g. via the PLC using process data).

During traversing, the motion parameters can also be influenced (on-the-fly setpoint acceptance) and an on-the-fly change can be undertaken between the Setup and Positioning modes. The "direct setpoint input" mode (MDI) can also be used if the axis is not referenced in the "setup" or "relative positioning" modes, which means that "flying referencing" (see the separate section), flying synchronization, and post-referencing are possible.

The direct setpoint input function is activated by p2647 = 1. A distinction is made between two modes: positioning mode (p2653 = 0) and setup mode (p2653 = 1).

In "positioning" mode, the parameters (position, velocity, acceleration and deceleration) can be used to carry out absolute (p2648 = 1) or relative (p2648 = 0) positioning with the parameter p2690 (fixed setpoint position).

In the setting-up mode, using parameters (velocity, acceleration and deceleration) "endless" closed-loop position control behavior can be carried-out.

It is possible to make a flying changeover between the two modes.

If continuous acceptance (p2649 = 1) is activated, changes to the MDI parameters are accepted immediately. Otherwise the values are only accepted when there is a positive edge at binector input p2650 (setpoint acceptance edge).

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Drive Functions

Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4

Page 276
Image 276
Efficient Networks S120 manual Direct setpoint input MDI, Features